DOI: 10.1007/s00382-011-1125-y
Scopus记录号: 2-s2.0-84861823057
论文题名: Effects of crop growth and development on regional climate: A case study over East Asian monsoon area
作者: Chen F. ; Xie Z.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 38, 期: 2017-11-12 起始页码: 2291
结束页码: 2305
语种: 英语
英文关键词: Crop growth and development
; East Asian monsoon area
; Regional climate
英文摘要: In this study, the CERES phenological growth and development functions were implemented into the regional climate model, RegCM3 to give a model denoted as RegCM3_CERES. This model was used to represent interactions between regional climate and crop growth processes. The effects of crop growth and development processes on regional climate were then studied based on two 20-year simulations over the East Asian monsoon area conducted using the original regional climate model RegCM3, and the coupled RegCM3_CERES model. The numerical experiments revealed that incorporating the crop growth and development processes into the regional climate model reduced the root mean squared error of the simulated precipitation by 2.2-10.7% over north China, and the simulated temperature by 5.5-30.9% over the monsoon region in eastern China. Comparison of the simulated results obtained using RegCM3_CERES and RegCM3 showed that the most significant changes associated with crop modeling were the changes in leaf area index which in turn modify the aspects of surface energy and water partitions and lead to moderate changes in surface temperature and, to some extent, rainfall. Further analysis revealed that a robust representation of seasonal changes in plant growth and developmental processes in the regional climate model changed the surface heat and moisture fluxes by modifying the vegetation characteristics, and that these differences in simulated surface fluxes resulted in different structures of the boundary layer and ultimately affected the convection. The variations in leaf area index and fractional vegetation cover changed the distribution of evapotranspiration and heat fluxes, which could potentially lead to anomalies in geopotential height, and consequently influenced the overlying atmospheric circulation. These changes would result in redistribution of the water and energy through advection. Nevertheless, there are significant uncertainties in modeling how monsoon dynamics responds to crop modeling and more research is needed. © 2011 The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55286
Appears in Collections: 过去全球变化的重建
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作者单位: LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; Zhejiang Institute of Meteorological Sciences, Hangzhou 310017, China
Recommended Citation:
Chen F.,Xie Z.. Effects of crop growth and development on regional climate: A case study over East Asian monsoon area[J]. Climate Dynamics,2012-01-01,38(2017-11-12)